Wire harness

Abstract

To provide a wiring harness capable of holding an electric wire without using an adhesive tape.SOLUTION: A wiring harness 10 comprises: an electric wire 20; a pipe 30 through which the electric wire 20 is inserted; and a holder 40 which holds the electric wire 20 while being fixed to an end in a lengthwise direction of the pipe 30. The wiring harness 10 comprises a heat shrinkable tube 25 which has heat shrinkability and is fixed to an outer circumferential surface of the electric wire 20. The holder 40 has an engaging part 43 which engages with the heat shrinkable tube 25 so as to restrict the electric wire 20 from moving in the lengthwise direction with respect to the holder 40.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to a wire harness. [Background technology]

[0002] Conventionally, there has been a wire harness that includes electric wires, a pipe that covers the outer periphery of the electric wires, and a holder that is fixed to the longitudinal end of the pipe and holds the electric wires (see, for example, Patent Document 1). The holder includes a cylindrical inner fitting portion that is fitted into the longitudinal end of the pipe, and a holding piece that extends from a circumferential part of the inner fitting portion inside the pipe. The holder holds the electric wires by wrapping the holding piece together with the electric wires in adhesive tape. In such a wire harness, the holder holds the position of the electric wires relative to the end of the pipe, thereby suppressing, for example, rubbing of the electric wires against the end of the pipe. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-84547 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-described wire harness, adhesive tape is used to hold the electric wires in the holder, which requires, for example, tape wrapping. Also, a structure that relies on the adhesive strength of the adhesive tape is weak in holding the electric wires in the holder. As a result, for example, the electric wires are easily displaced in the length direction of the electric wires relative to the holder.

[0005] An object of the present disclosure is to provide a wire harness that can hold electric wires without using adhesive tape. [Means for solving the problem]

[0006] The wire harness of the present disclosure is a wire harness including an electric wire, a pipe through which the electric wire is inserted, and a holder fixed to the longitudinal end of the pipe and holding the electric wire, the wire harness including a heat-shrinkable tube fixed to the outer peripheral surface of the electric wire, and the holder having an engaging portion that engages with the heat-shrinkable tube to restrict longitudinal movement of the electric wire relative to the holder. [Effects of the Invention]

[0007] According to the wire harness of the present disclosure, the electric wires can be held without using adhesive tape. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram showing a wire harness according to an embodiment. [Figure 2] FIG. 2 is a partial cross-sectional view of the wire harness according to the embodiment. [Figure 3] FIG. 3 is a partial perspective view of the wire harness according to the embodiment. [Figure 4] FIG. 4 is a partially exploded perspective view of the wire harness according to the embodiment. [Figure 5] FIG. 5 is a cross-sectional view taken along line 5-5 in FIG. [Figure 6] FIG. 6 is a partial cross-sectional view of a wire harness according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. The wire harness of the present disclosure includes: [1] A wire harness comprising an electric wire, a pipe through which the electric wire is inserted, and a holder fixed to the longitudinal end of the pipe and holding the electric wire, the wire harness further comprising a heat-shrinkable tube fixed to the outer peripheral surface of the electric wire, the holder having an engaging portion that engages with the heat-shrinkable tube to restrict longitudinal movement of the electric wire relative to the holder.

[0010] According to this configuration, the holder has an engaging portion that engages with the heat-shrinkable tube fixed to the outer circumferential surface of the electric wire to restrict longitudinal movement of the electric wire relative to the holder, so that longitudinal movement of the electric wire is restricted without using adhesive tape. Therefore, for example, tape wrapping work is not necessary. Furthermore, compared to a configuration that relies on the adhesive force of adhesive tape, longitudinal displacement of the electric wire relative to the holder can be suppressed.

[0011] [2] It is preferable that the electric wire is constructed by connecting a first electric wire and a second electric wire arranged along the length direction of the electric wire, the first electric wire has a first core wire and a first insulating coating that covers the outer periphery of the first core wire, the second electric wire has a second core wire and a second insulating coating that covers the outer periphery of the second core wire, the electric wire has a joint where the first core wire and the second core wire are joined, and the heat-shrinkable tube covers the first insulating coating and the second insulating coating while covering the joint.

[0012] According to this configuration, the heat-shrinkable tube covers the first insulating coating and the second insulating coating while covering the joint, thereby preventing the joint from being wetted with water, for example. In this way, the heat-shrinkable tube has two functions, so the number of parts can be reduced compared to, for example, a case in which a member that engages with the engaging portion of the holder and a member that prevents the joint from being wetted are separately provided.

[0013] [3] It is preferable that the engaging portion is one of a pair of engaging portions spaced apart in the longitudinal direction of the holder, and that the pair of engaging portions are arranged so as to be able to engage with both end faces of the heat shrink tube in the longitudinal direction.

[0014] According to this configuration, a pair of engaging portions spaced apart in the longitudinal direction of the holder are arranged to be engageable with both longitudinal end faces of the heat-shrinkable tube, thereby effectively restricting longitudinal movement of the electric wire.

[0015] [4] It is preferable that the heat-shrinkable tube has a recess at a location corresponding to the joint, and that the engaging portion is fitted into the recess so as to be able to engage with both end surfaces of the recess in the longitudinal direction.

[0016] According to this configuration, the engaging portion is fitted into the recess at the location corresponding to the joint portion and is capable of engaging with both longitudinal end faces of the recess, thereby effectively restricting longitudinal movement of the electric wire.

[0017] [5] It is preferable that the end of the first core wire and the end of the second core wire at the joint are flattened, so that the depth of the recess is greater than the thickness of the heat-shrinkable tube.

[0018] With this configuration, the depth of the recess is greater than the thickness of the heat-shrinkable tube, which increases the engagement area between the heat-shrinkable tube and the engagement portion, thereby enabling the engagement portion to be firmly engaged with the heat-shrinkable tube, thereby more firmly restricting the movement of the electric wire in the longitudinal direction.

[0019] [6] It is preferable that the engaging portion further restricts movement of the electric wire relative to the holder in a direction intersecting the longitudinal direction of the electric wire. According to this configuration, the engaging portion further restricts movement of the electric wire relative to the holder in a direction intersecting the length direction thereof, so that movement of the electric wire in a direction intersecting the length direction thereof is also restricted without using adhesive tape.

[0020] [7] It is preferable that the electric wire is one of two electric wires, the engaging portion is one of a pair of engaging portions facing each other in the radial direction of the holder, and the pair of engaging portions are configured to clamp the electric wire along the direction in which the two electric wires are arranged.

[0021] According to this configuration, the pair of engaging portions facing each other in the radial direction of the holder are configured to sandwich the two electric wires along the direction in which the two electric wires are arranged, so that the two electric wires can be held well. [Details of the embodiments of the present disclosure] Specific examples of the wire harness of the present disclosure will be described below with reference to the drawings. In each drawing, for the convenience of explanation, some of the configuration may be exaggerated or simplified. Furthermore, the dimensional ratios of each part may differ between drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. In this specification, "parallel" and "orthogonal" do not only refer to the cases of being strictly parallel or orthogonal, but also refer to roughly within the scope of the effects of this embodiment. Parallel and Furthermore, the terms "circle" and "arc" in this specification do not necessarily mean a strict circle or arc, but also include a general circle or arc within the scope of the advantageous effects of this embodiment.

[0022] (Overall configuration of the wire harness 10) 1 electrically connects two or more electrical devices. The wire harness 10 electrically connects an inverter 11 installed in the front of a vehicle V, such as a hybrid vehicle or an electric vehicle, to a high-voltage battery 12 installed behind the inverter 11 on the vehicle V. The wire harness 10 is routed, for example, so as to pass under the floor of the vehicle V. For example, the intermediate portion of the wire harness 10 in the longitudinal direction is routed outside the passenger compartment of the vehicle V, such as under the floor of the vehicle V.

[0023] The inverter 11 is connected to a wheel drive motor (not shown) that serves as a power source for running the vehicle. The inverter 11 generates AC power from DC power from a high-voltage battery 12 and supplies the AC power to the motor. The high-voltage battery 12 is a battery capable of supplying a voltage of, for example, several hundred volts.

[0024] As shown in FIG. 2, the wire harness 10 includes electric wires 20 that electrically connect the above-mentioned electrical devices to each other, a heat-shrinkable tube 25 fixed to the outer surface of the electric wires 20, a pipe 30 through which the electric wires 20 are inserted, and a holder 40 attached to the end of the pipe 30 in the longitudinal direction.

[0025] (Electronic line 2 0 configuration) The wire harness 10 has two electric wires 20. Each of the electric wires 20 is configured by connecting a first electric wire 21 and a second electric wire 22 that are arranged along the longitudinal direction of the electric wire 20. The first electric wire 21 has a first core wire 21a and a first insulating coating 21b that covers the outer periphery of the first core wire 21a. The second electric wire 22 has a second core wire 22a and a second insulating coating 22b that covers the outer periphery of the second core wire 22a.

[0026] The first core wire 21a and the second core wire 22a may be, for example, a twisted wire formed by twisting together a plurality of metal wires, or a braided member formed by weaving a plurality of metal wires into a cylindrical shape. The first core wire 21a and the second core wire 22a of this embodiment are twisted wires. The first core wire 21a and the second core wire 22a may be made of, for example, a copper-based or aluminum-based metal material. Note that Figure 2 and other figures schematically illustrate the first core wire 21a and the second core wire 22a, which are twisted wires.

[0027] The first insulating coating 21b and the second insulating coating 22b are made of an insulating material such as synthetic resin. The electric wire 20 also has a joint 23 where the first core wire 21a and the second core wire 22a are joined together. More specifically, the end 21c in the longitudinal direction of the first core wire 21a is exposed by removing the first insulating coating 21b. The end 21c of the first core wire 21a is flattened by being crushed. The end 22c in the longitudinal direction of the second core wire 22a is exposed by removing the second insulating coating 22b. The end 22c of the second core wire 22a is flattened by being crushed. The end 21c of the first core wire 21a and the end 22c of the second core wire 22a are joined together while overlapping each other, thereby constituting the joint 23.

[0028] (Configuration of heat shrink tube 25) The heat-shrinkable tube 25 has heat-shrinkability, meaning that it shrinks when heated. Before being heated, the heat-shrinkable tube 25 has a cylindrical shape that allows the electric wire 20 to be passed through. Therefore, when the heat-shrinkable tube 25 is heated with the electric wire 20 passed through it, it thermally shrinks, deforming to cover the outer periphery of the electric wire 20 while adhering closely to the outer periphery of the electric wire 20. That is, when the heat-shrinkable tube 25 thermally shrinks, it deforms to cover the first insulating coating 21b and the second insulating coating 22b while covering the joint 23. In other words, the heat-shrinkable tube 25 is provided across the end of the first insulating coating 21b and the end of the second insulating coating 22b so as to cover the joint 23 therebetween. Note that the heat-shrinkable tube 25 of this embodiment has a recess 25a in a portion corresponding to the joint 23. The recess 25a is recessed more than other areas because the first insulating coating 21b and the second insulating coating 22b are not provided at the joint 23 and the end 21c of the first core wire 21a and the end 22c of the second core wire 22a are flattened.

[0029] (Pipe 30 configuration) The pipe 30 is formed in a long cylindrical shape. The pipe 30 of this embodiment is formed in a true cylindrical shape. The pipe 30, for example, accommodates the middle portion of the electric wire 20 in the longitudinal direction inside. The pipe 30, for example, covers the outer periphery of the electric wire 20 over the entire circumferential direction. The pipe 30 can be, for example, a metal pipe or a resin pipe. Examples of materials that can be used for the metal pipe include aluminum-based and copper-based metal materials. Examples of materials that can be used for the resin pipe include synthetic resins such as polyolefin, polyamide, polyester, and ABS resin. The pipe 30 of this embodiment is a metal pipe.

[0030] The pipe 30 is bent, for example, two-dimensionally or three-dimensionally at a portion extending upward from under the floor of the vehicle V. For example, the pipe 30 is bent while the electric wire 20 is inserted inside the straight pipe 30.

[0031] 3 and 4, circular through holes 31 are provided on the outer peripheral surface of the pipe 30. The through holes 31 are provided in positions near the ends of the pipe 30 in the longitudinal direction. The through holes 31 are provided at two different positions in the circumferential direction of the pipe 30. The through holes 31 are provided at equal intervals in the circumferential direction of the pipe 30.

[0032] (Configuration of holder 40) As shown in FIGS. 2 and 4, the holder 40 has a cylindrical portion 41, a flange portion 42, and an engaging portion 43. The cylindrical portion 41 is fitted into the longitudinal end of the pipe 30. The outer peripheral surface of the cylindrical portion 41 faces the inner peripheral surface of the pipe 30. The flange portion 42 is provided at a first longitudinal end 41a of the cylindrical portion 41. The flange portion 42 protrudes radially outward from the cylindrical portion 41. The flange portion 42 is provided at a portion of the circumferential direction of the cylindrical portion 41. When the cylindrical portion 41 is fitted into the pipe 30, the flange portion 42 abuts against the longitudinal end surface of the pipe 30. As shown in FIGS. 4 and 5, the holder 40 is composed of a first constituent portion 44, a second constituent portion 45, and a thin-walled hinge portion 46. The first component part 44 and the second component part 45 have a shape in which the cylindrical part 41 and the flange part 42 are divided in the circumferential direction. The circumferential ends of the first component part 44 and the second component part 45 are connected by a thin hinge part 46. That is, the holder 40 can be set to an open state by relatively rotating the first component part 44 and the second component part 45 around the hinge part 46. When the holder 40 is changed from an open state to a closed state, it is attached to the electric wire 20 so as to cover the electric wire 20 from the outside. The holder 40 is made of resin.

[0033] As shown in FIG. 4, the cylindrical portion 41 has slits 41c extending from the second end 41b toward the first end 41a in the longitudinal direction of the cylindrical portion 41. The cylindrical portion 41 has flexible pieces 41d in a portion sandwiched between the pair of slits 41c. The flexible pieces 41d are capable of bending in the radial direction of the cylindrical portion 41, with the portion opposite the second end 41b as a base end. As shown in FIG. 5, the flexible pieces 41d are provided at two different positions in the circumferential direction of the cylindrical portion 41. The flexible pieces 41d are provided at equal intervals in the circumferential direction of the cylindrical portion 41. The flexible pieces 41d are provided at the circumferential center of the first component portion 44 and the circumferential center of the second component portion 45.

[0034] The flexible piece 41d has a fixing protrusion 41e. The fixing protrusion 41e protrudes radially outward from the cylindrical portion 41. As shown in FIGS. 4 and 5 , the fixing protrusion 41e fits into the through-hole 31 when the cylindrical portion 41 is fitted inside the pipe 30, thereby preventing the cylindrical portion 41 from coming off the pipe 30. In this way, the holder 40 is fixed to the pipe 30.

[0035] As shown in FIGS. 2 and 5 , the engaging portions 43 protrude radially inward from the cylindrical portion 41. The engaging portions 43 engage with the heat-shrinkable tube 25 to restrict longitudinal movement of the electric wire 20 relative to the holder 40. More specifically, as shown in FIG. 2 , a pair of engaging portions 43 are provided spaced apart in the longitudinal direction of the holder 40. In other words, the engaging portions 43 are provided at two different positions in the longitudinal direction of the holder 40. The pair of engaging portions 43 spaced apart in the longitudinal direction of the holder 40 are provided to be able to engage with both end surfaces 25b of the heat-shrinkable tube 25 in the longitudinal direction. In other words, the pair of engaging portions 43 spaced apart in the longitudinal direction of the holder 40 are provided so that the heat-shrinkable tube 25 is disposed between the two engaging portions 43. In this way, the engaging portions 43 restrict longitudinal movement of the heat-shrinkable tube 25 and the electric wire 20 relative to the holder 40.

[0036] 5, the engaging portion 43 is provided at a part of the circumferential direction of the cylindrical portion 41. The engaging portion 43 is provided between the circumferential end of each of the first constituent portion 44 and the second constituent portion 45 and the flexible piece 41d. A pair of engaging portions 43 are provided facing each other in the radial direction of the cylindrical portion 41. The tip of the engaging portion 43 is formed in an arc shape along the outer circumferential surface of the electric wire 20. As a result, the engaging portion 43 is configured to further restrict movement of the electric wire 20 relative to the holder 40 in a direction intersecting the longitudinal direction of the electric wire 20. That is, the pair of engaging portions 43 facing each other in the radial direction of the holder 40 are configured to sandwich the electric wire 20 along the direction in which the two electric wires 20 are arranged side by side, and by engaging with the outer circumferential surfaces of the electric wires 20, further restrict movement of the electric wire 20 in a direction intersecting the longitudinal direction of the electric wire 20.

[0037] 2, the engaging portions 43 are provided on the inner circumferential surface of the first constituent portion 44 at two different positions in the length direction of the electric wire 20. Similarly, the engaging portions 43 are provided on the inner circumferential surface of the second constituent portion 45 at two different positions in the length direction of the electric wire 20. That is, in the present embodiment, the first constituent portion 44 and the second constituent portion 45 are each provided with two engaging portions 43.

[0038] The operation of this embodiment will be described. The electric wire 20 is held in the holder 40 by the engaging portion 43. The holder 40 is fixed to the end of the pipe 30 in the longitudinal direction by the fixing protrusion 41e that fits into the through hole 31. This prevents the position of the electric wire 20 in the longitudinal direction from shifting relative to the end of the pipe 30, even if a force is applied to the electric wire 20 when the pipe 30 is bent, for example. Furthermore, rubbing of the electric wire 20 against the end of the pipe 30 is prevented, for example.

[0039] Next, the effects of the above embodiment will be described below. (1) The holder 40 has an engaging portion 43 that engages with the heat-shrinkable tube 25 fixed to the outer peripheral surface of the electric wire 20 to restrict longitudinal movement of the electric wire 20 relative to the holder 40. Therefore, longitudinal movement of the electric wire 20 is restricted without using adhesive tape. Therefore, for example, tape wrapping work is not required. Furthermore, compared to a configuration that relies on the adhesive force of adhesive tape, longitudinal displacement of the electric wire 20 relative to the holder 40 can be suppressed.

[0040] (2) Heat-shrinkable tube 25 covers first insulating coating 21b and second insulating coating 22b while covering joint 23, thereby preventing water from getting into joint 23. In this way, heat-shrinkable tube 25 has two functions, and therefore the number of parts can be reduced compared to, for example, a case in which a member that engages with engaging portion 43 of holder 40 and a member that prevents water from getting into joint 23 are provided separately.

[0041] (3) The pair of engaging portions 43 spaced apart in the lengthwise direction of the holder 40 are provided to be engageable with both end faces 25b of the heat-shrinkable tube 25 in the lengthwise direction, so that movement of the wire 20 in the lengthwise direction can be effectively restricted.

[0042] (4) The engaging portion 43 further restricts movement of the wire 20 relative to the holder 40 in a direction intersecting the length direction thereof, so that movement of the wire 20 in a direction intersecting the length direction thereof is also restricted without using adhesive tape.

[0043] (5) The pair of engagement portions 43 that face each other in the radial direction of the holder 40 are configured to sandwich the two electric wires 20 along the direction in which the two electric wires 20 are arranged, and therefore the two electric wires 20 can be held well.

[0044] This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility. In the above embodiment, the engaging portion 43 is configured to be able to engage with both end faces 25b of the heat-shrinkable tube 25 in the longitudinal direction. However, the engaging portion 43 may be configured to engage with other portions of the heat-shrinkable tube 25 as long as it can restrict the longitudinal movement of the electric wire 20 relative to the holder 40.

[0045] For example, a modification may be made as shown in FIG. 6 . In this example, the engaging portion 50 is fitted into the recess 25a of the heat-shrinkable tube 25 so as to be engageable with both longitudinal end faces 25c of the recess 25a. Even in this configuration, the engaging portion 50 can effectively restrict the longitudinal movement of the heat-shrinkable tube 25 and the electric wire 20. In addition, in this example, the end 21c of the first core wire 21a and the end 22c of the second core wire 22a at the joint portion 23 are flattened, so that the depth of the recess 25a is greater than the thickness of the heat-shrinkable tube 25. Therefore, for example, compared to the above embodiment, the engagement area between the heat-shrinkable tube 25 and the engaging portion 50 can be increased, and ultimately, the engaging portion 50 can be reliably engaged with the heat-shrinkable tube 25. Therefore, the longitudinal movement of the electric wire 20 can be more reliably restricted.

[0046] In the above embodiment, the heat-shrinkable tube 25 covers the first insulating coating 21b and the second insulating coating 22b while covering the joint 23. However, this is not limited to this, and the heat-shrinkable tube 25 may not cover the joint 23. For example, the electric wire 20 may not have the joint 23.

[0047] In the above embodiment, the engaging portion 43 has an arc-shaped tip that follows the outer circumferential surface of the electric wire 20, thereby restricting movement of the electric wire 20 relative to the holder 40 in a direction intersecting the longitudinal direction thereof. However, the present invention is not limited to this. For example, the engaging portion 43 may be provided around the entire circumference of the cylindrical portion 41, and the engaging portion 43 may have an arc-shaped tip that follows the inner circumferential surface of the cylindrical portion 41.

[0048] In the above embodiment, the holder 40 has a pair of engaging portions 43 that face each other in the radial direction of the holder 40, and the pair of engaging portions 43 is configured to sandwich the two electric wires 20 along the direction in which the two electric wires 20 are arranged, but this is not limiting. For example, the pair of engaging portions 43 do not have to face each other in the radial direction of the cylindrical portion 41 of the holder 40. Also, for example, the engaging portion 43 may be provided for each electric wire 20 so as to sandwich the electric wire 20.

[0049] In the above embodiment, the wire harness 10 has two electric wires 20, but is not limited to this and may have one or three or more electric wires 20. In addition, the number of engagement portions 43 provided in the circumferential direction of the holder 40 may also be changed.

[0050] In the above embodiment, the pipe 30 is formed in a true cylindrical shape, but this is not limited thereto and may be formed in, for example, a square cylindrical shape, an elliptical shape, etc. Furthermore, the shape of the cylindrical portion 41 of the holder 40 may be changed depending on the shape of the pipe 30.

[0051] In the above embodiment, the holder 40 is configured from the first component part 44, the second component part 45, and the thin hinge part 46, but this is not limited to this. For example, the holder 40 may be configured from a first component part and a second component part that are not connected by the hinge part 46.

[0052] In the above embodiment, two through holes 31 and two fixing protrusions 41e are provided, but this is not limited to this. For example, a configuration in which only one is provided, or a configuration in which three or more are provided, may be used.

[0053] In the above embodiment, the wire harness 10 electrically connects the inverter 11 and the high-voltage battery 12, but is not limited to this and may be used to electrically connect other electrical devices. [Explanation of symbols]

[0054] 10 Wire harness 11 Inverter 12 High-voltage battery 20 Electric wire 21 First Electric Wire 21a First core wire 21b First insulating coating 21c end 22 Second Electric Wire 22a Second core wire 22b Second insulating coating 22c end 23 Joint 25 Heat shrink tubing 25a Recess 25b both end faces 25c both ends 30 Pipe 31 Through hole 40 Holder 41 Cylindrical part 41a First end 41b Second end 41c slit 41d flexible piece 41e Fixed protrusion 42 Flange 43 Engagement part 44 First component 45 Second component 46 Hinge part 50 engagement portion V vehicle

Claims

1. Electric wires and a pipe through which the electric wire is inserted; a holder fixed to an end of the pipe in a longitudinal direction and holding the electric wires, a heat-shrinkable tube that is heat-shrinkable and fixed to the outer peripheral surface of the electric wire; the holder has an engaging portion that engages with the heat-shrinkable tube to restrict movement of the electric wire relative to the holder in the longitudinal direction, the electric wire is configured by connecting a first electric wire and a second electric wire that are arranged along a longitudinal direction of the electric wire, the first electric wire has a first core wire and a first insulating coating that covers an outer periphery of the first core wire, the second electric wire has a second core wire and a second insulating coating that covers an outer periphery of the second core wire, The electric wire has a joint portion where the first core wire and the second core wire are joined together, the heat-shrinkable tube has a recess at a location corresponding to the joint, The engaging portion is fitted into the recess and is capable of engaging with both end surfaces of the recess in the length direction. Wire harness.

2. The heat shrink tube covers the first insulating coating and the second insulating coating while covering the joint. The wire harness according to claim 1 .

3. The end of the first core wire and the end of the second core wire at the joint portion are flattened, so that the depth of the recess is greater than the thickness of the heat-shrinkable tube. The wire harness according to claim 1 .

4. The engaging portion further restricts movement of the electric wire relative to the holder in a direction intersecting the longitudinal direction of the electric wire. The wire harness according to any one of claims 1 to 3.

5. the wire is one of two wires; the engaging portion is one of a pair of engaging portions that face each other in a radial direction of the holder, The pair of engaging portions are configured to sandwich the two electric wires along the direction in which the two electric wires are arranged. The wire harness according to any one of claims 1 to 4.

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